diff --git a/tsconfig.json b/tsconfig.json
index 965cc8d..a773b23 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -13,7 +13,7 @@
 		"experimentalDecorators": true,
 		"forceConsistentCasingInFileNames": true,
 
-		"strictFunctionTypes": false,
+		"strictFunctionTypes": true,
 		"strictNullChecks": true,
 		"strictPropertyInitialization": true,